package com.heima.user.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.toolkit.Wrappers;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.heima.model.common.dtos.ResponseResult;
import com.heima.model.common.enums.AppHttpCodeEnum;
import com.heima.model.user.dtos.LoginDto;
import com.heima.model.user.pojos.ApUser;
import com.heima.user.mapper.ApUserMapper;
import com.heima.user.service.ApUserService;
import com.heima.utils.common.AppJwtUtil;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.DigestUtils;

import java.util.HashMap;
import java.util.Map;
import java.util.Objects;

@Service
@Transactional
@Slf4j
public class ApUserServiceImpl extends ServiceImpl<ApUserMapper,ApUser> implements ApUserService {
    /**
     * app端登录功能
     *
     * @param dto
     * @return
     */
    @Override
    public ResponseResult login(LoginDto dto) {

        // 1.正常登录，用户名和密码登录
        if (StringUtils.isNotBlank(dto.getPhone()) && StringUtils.isNotBlank(dto.getPassword())){
            // 1.1 根据手机号查询用户信息
            ApUser dbApUser = getOne(Wrappers.<ApUser>lambdaQuery().eq(ApUser::getPhone, dto.getPhone()));
            // 用户不存在
            if (dbApUser == null )
                return ResponseResult.errorResult(AppHttpCodeEnum.DATA_NOT_EXIST,"用户信息不存在");

            // 1.2 比对密码
            String salt = dbApUser.getSalt();
            String password = dto.getPassword();
            String pwd = DigestUtils.md5DigestAsHex((password + salt).getBytes());

            // 密码错误
            if (!pwd.equals(dbApUser.getPassword()))
                return ResponseResult.errorResult(AppHttpCodeEnum.LOGIN_PASSWORD_ERROR);

            // 1.3 返回数据 jwt user
            String token = AppJwtUtil.getToken(dbApUser.getId().longValue());
            Map<String,Object> map = new HashMap<>();
            // 清空返回前端的salt和password
            dbApUser.setSalt("");
            dbApUser.setPassword("");
            map.put("user",dbApUser);
            map.put("token",token);

            return ResponseResult.okResult(map);
        }else {
            // 2.游客登录
            Map<String,Object> map = new HashMap<>();
            map.put("token",AppJwtUtil.getToken(0L));
            return ResponseResult.okResult(map);
        }
    }
}
